World checklist of hornworts and liverworts

Abstract

A working checklist of accepted taxa worldwide is vital in achieving the goal of developing an online flora of all known plants by 2020 as part of the Global Strategy for Plant Conservation. We here present the first-ever worldwide checklist for liverworts (Marchantiophyta) and hornworts (Anthocerotophyta) that includes 7486 species in 398 genera representing 92 families from the two phyla. The checklist has far reaching implications and applications, including providing a valuable tool for taxonomists and systematists, analyzing phytogeographic and diversity patterns, aiding in the assessment of floristic and taxonomic knowledge, and identifying geographical gaps in our understanding of the global liverwort and hornwort flora. The checklist is derived from a working data set centralizing nomenclature, taxonomy and geography on a global scale. Prior to this effort a lack of centralization has been a major impediment for the study and analysis of species richness, conservation and systematic research at both regional and global scales. The success of this checklist, initiated in 2008, has been underpinned by its community approach involving taxonomic specialists working towards a consensus on taxonomy, nomenclature and distribution.

Flora das cangas da Serra dos Carajás, Pará, Brasil: Lophocoleaceae

“…Lophocoleaceae Vanden Berghen possui 21 gêneros e 430 espécies, das quais 172 são aceitas por Söderström et al (2016). No Brasil, foram registrados cinco gêneros e 24 espécies (Gradstein & Costa 2003).…”

“…O gênero possui 151 espécies, das quais 47 aceitas por Söderström et al (2016). No total, 18 espécies ocorrem no Brasil (Costa & Peralta 2015), geralmente sobre troncos de árvore viva ou em decomposição, sobre rochas, no solo, e raramente sobre folhas (Gradstein et al 2001;Gradstein & Costa 2003).…”

Flora das cangas da Serra dos Carajás, Pará, Brasil: Lepidoziaceae

“…Esse gênero compreende 33 espécies aceitas (Söderström et al 2016), das quais apenas três foram registradas no Brasil (Costa & Peralta 2015). Telaranea é representado por plantas com filídios com inserção transversal ou súcuba, divididos em 2-4 filamentos unisseriados ou consistindo de apenas um filamento (Gradstein & Ilkiu-Borges 2009 Figs 1a-c Plantas 0,6-1 mm de largura, verde-pálido a verde-esbranquiçado.…”

A new key to the genera of liverworts of Colombia

“…Classification of the families into orders, subclasses and classes follows Crandall- Stotler et al (2009) except for Pleuroziaceae which are placed in a separate subclass, Pleuroziidae, following Frey (2009). Author citations of the genera follow Söderström et al (2016) but the use of "ex" (e.g., Gottsche ex Steph.) is omitted and only the second, validating author (in this case Steph.)…”